We recently had the owners of another shop that is considering a ROQ press in touring our facility. They said they use designpickle for EVERYTHING. Every crappy .jpg, .gif, whatever goes. They claim that they have even scanned a design idea that was written on a bar napkin, sent it in, and got a design back in 24 hours.
We haven't used them but are considering trying their service. For even a semi busy shop, $360 unlimited (including edits) seems like a pretty good deal to me.